Re: [PATCH] sched/fair: Do not decay new task load on first enqueue

From: Matt Fleming
Date: Tue Oct 11 2016 - 15:02:53 EST


On Tue, 11 Oct, at 03:14:47PM, Vincent Guittot wrote:
> >
> > I see a regression,
> >
> > baseline: 2.41228
> > patched : 2.64528 (-9.7%)
>
> Just to be sure; By baseline you mean v4.8 ?

Baseline is actually tip/sched/core commit 447976ef4fd0
("sched/irqtime: Consolidate irqtime flushing code") but I could try
out v4.8 instead if you'd prefer that.

> > cat /tmp/trace.$1 | grep -E "wakeup_new.*comm=hackbench" | \
> > sed -e 's/.*target_cpu=//' | sort | uniq -c | awk '{print $1}'
>
> nice command to evaluate spread

Thanks!